Tata Bahasa Jepang is an Android app designed for those who want to learn Japanese in Indonesian language. The app sources its content from various online media, especially Weihome Gakuen - a free online Japanese language school accessible to anyone who can speak Indonesian. The founder and owner of Weihome Gakuen is Erdy Wei. The app offers a collection of 1500 vocabulary words written in kanji, hiragana, romaji, and Indonesian translations.

One of the app's standout features is its speech feature, which can help users speak Japanese with proper intonation and pronunciation. The speech feature is also deliberately set at a slower pace, allowing users to master the correct vocabulary and rhythm of the language. All features in the Tata Bahasa Jepang app can work offline, making it convenient for users to learn anytime, anywhere.